Soling machine



July 13, 1937. -A. EHRESMAINN ET AL. 2,086,953

SOLING MACHINE Filed Oct. 26, 1954 invenzor lmieniar Patented July 13, 1937 UNITED STAT SOLING MACHINE Adam Ehresmann and Ludwig Streibel, Karlsruhe, Germany Application October 20,

1934, Serial No. 749,229

In Germany October 25, 1933 5 Claims.

Our invention relates to soling machines having a channelling knife which moves with the feeding tool and projects beside the same through a slot in the stitch plate and which in its upward movment cuts a channel at right angles to the surface of the sole into the under side of the sole which is pressed down upon the stitch plate by the presser foot. In the known machines of this I type the feeding slider, which consists of two 1 plates vertically disposed one close behind the other, which plates reciprocate laterally and one of which reciprocates also vertically, is disposed behind the front part of the machine frame which receives the shuttle box, and the vertically l reciprocating plate is provided at the top with a knee-shaped arm which projects at first upwardly and then forwardly through a recess in said front frame part and carries at its free end the feeding tool and the channelling knife.

The following is one disadvantage of this construction. The said knee-shaped arm cannot, in View of the small height of the space between the shuttle-box and the stitch-plate in which its forwardly projecting part reciprocates vertically and laterally, be made so thick that it cannot be bent downwardly under the pressure acting from above on its free end; therefore when the channelling knife strikes against a hard piece of the sole the knee-shaped arm gives to such an extent that the knife does not cut a sufficiently deep channel.

According to our invention the channelling knife is provided on an upright plate, which reciprocates vertically and laterally in front of the vertical front face of the front frame part re ceiving the shuttle box, so as to project upwardly in the plane of. this plate; the latter is not resilient in the direction of its plane, in which the pressure from above produced on the penetration of the channelling knife into the sole acts, even when this pressure is high on the knife striking against a hard part of the sole.

Furthermore the feeding tool may be provided beside the channelling knife on the said upright plate reciprocating in front of the said front frame part.

The said upright plate is reciprocated vertically from the driving shaft by means of a lever to one arm of which this plate is connected so as to be movable laterally; the pivot pin of this lever is adjustable so that by merely adjusting it the said plate and therewith also the channelling knife can be adjusted in the vertical direction and thus the knife can be set to different depths of channel.

(Cl. I1245) Referring to the drawing, Figures 1 and 2 show the parts in question of a machine according to our invention in vertical longitudinal section through the centre and in front elevation, and Figures 3 to 5 illustrate modified constructions of the channelling knife and of the feeding tool respectively in front and rear elevation and in vertical section.

In the machine shown in Figures 1 and 2 there are provided four upright plates one close behind the other, namely a frame-like plate is lying on the vertical front face of the front frame part a, which receives the shuttle box, a frame-like plate Z, a full plate m which does not extend to the same height as the other plates referred to but is wider, and a frame-like plate n lying on the plate in and on the upper part of the plate I. The plates 70 and n are secured to the part a, while the plate mis movable laterally in a recess in the plate n, and the plate I is movable vertically and laterally together with the plate m embracing it by two vertical guide lugs m. The plate I is provided at the top with an extension 0 which projects upwardly in the plane of the plate Z and through the slot of the stitch plate g and which has a step-shaped cutting edge; the higher and narrower part of this cutting edge constitutes the feeding tool while the lower and wider part forms the channelling knife.

The plate m is reciprocated laterally by a shaft 1), which is oscillated from the driving shaft, by means of a lever q, which engages the plate m at its end projecting laterally beyond the plates k: and n, and in making this lateral reciprocation the plate m by the above said guide lugs carries the plate Z with it, while the latter is reciprocated vertically by a lever T, which is also oscillated by the driving shaft by means of a cam acting upon the rearward end of the lever (not shown) to the forward end of the lever the plate I is hinged by means of a sliding member s secured to it. The pivot pin of the lever r is formed by the excentric part i of a bolt u, which is mounted in two downwardly extending perforated lugs v of the frame, and is rotatable by means of a handle w and can be fixed by means of a nut at. By rotating the bolt u the front end of the lever r together with the plate I can be adjusted in the vertical direction and thus the channelling knife can be set to different depth of channel.

In the constructions according to Figures 3 to 5 only the channelling knife 1 is provided on the plate Z, the feeding tool a being in known manner provided on the arm d of a vertically and laterally reciprocating plate provided behind the front frame part. In Figure 3 the feeding tool 2 engages in a recess in the plate I beside the channelling knife y, but in Figures 4 and 5 it has the form of a fork embracing the channelling knife y so that the plate carrying the tool a in its lateral movement carries with it the vertically reciprocating plate Z provided with the channelling knife 21.

What we claim as our invention and desire to secure by Letters Patent is:

1. In a soling machine of the type described the combination of a machine frame having a front part serving as shuttle box receiver, a stitch plate having a slot, an upright plate capable of reciprocating vertically and laterally in front of said front part, and a channelling knife provided' on said upright plate so as to project upwardly in the plane of the same and through said slot.

2. In a soling machine of the type described the combination of a machine frame having a front part serving as shuttle box receiver, a stitch plate having a slot, a feeding tool movable in said slot, an upright plate capable of reciprocating vertically and laterally in front of said front part, and a channelling knife provided on said upright plate so as to project upwardly in the plane of the same and through said slot beside said feeding tool.

3. In a soling machine of the type described the combination of a machine frame having a front part serving as shuttle box receiver, a stitch plate having a slot, an upright plate capable of reciprocating vertically and laterally in front of said front part, a channelling knife provided on said upright plate so as to project upwardly in the plane of the same and through said slot and a feeding tool provided on said plate and beside said channelling knife.

4. In a soling machine of the type described the combination of a machine frame having a front part serving as shuttle box receiver, a stitch plate having a slot, a feeding tool, a channelling knife, an upright plate capable of reciprocating vertically and laterally in front of said front part, and an extension provided at the top of said upright plate so as to project upwardly in the plane of the same and through said slot, said extension having a step-shaped cutting edge forming said tool and said knife.

5. In a soling machine of the type described the combination of a machine frame having a front part serving as shuttle box receiver, a stitch plate having a slot, an upright plate capable of reciprocating vertically and laterally in front of said front part, a channelling knife provided on said upright plate so as to project upwardly in the plane of the same and through said slot, a lever capable of oscillating vertically, and a adjustable pivot pin for said lever, said upht plate being supported by said lever, so as to be slidable laterally thereon and to be adjustable vertically by adjusting said pin.

ADAM EHRESMANN. LUDWIG STREIBEL. 

